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HelloTech

Official Hello technology account, sharing tech insights and developments.

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HelloTech
HelloTech
May 23, 2023 · Operations

Introduction to the Haro Monitoring System at the A2M Internet Architecture and AI Summit 2023

At the A2M Internet Architecture and AI Summit 2023 in Shanghai, senior backend expert Zhang Xiaoyong will present Haro’s seven‑year‑old monitoring system, detailing its overall architecture, evolution, application‑level observability practices such as tracing, logging, and metrics, the challenges encountered, and the company’s reflections and future plans.

ConferenceInfrastructure
0 likes · 2 min read
Introduction to the Haro Monitoring System at the A2M Internet Architecture and AI Summit 2023
HelloTech
HelloTech
May 23, 2023 · Frontend Development

Technical Architecture and Implementation of the HaKnight Desktop Application Using Electron

The article details HaKnight’s new desktop client architecture built with Electron, Vite, and React, explaining the choice of Electron over native frameworks, the custom scaffold, use of axios, lowdb, log4js‑node, and electron‑builder for packaging, signing, notarization, and update mechanisms, and outlines reusable components that enable cross‑platform task scheduling and reporting.

Cross‑platformDesktop ApplicationElectron
0 likes · 16 min read
Technical Architecture and Implementation of the HaKnight Desktop Application Using Electron
HelloTech
HelloTech
May 8, 2023 · Artificial Intelligence

One‑Stop AI Platform for Cloud, Edge, Mobile, Flink, and Application Intelligence: Architecture, Challenges, and Solutions

The article presents a comprehensive one‑stop AI platform that unifies training, model, feature, and decision services across cloud, edge, mobile, Flink, and application environments, detailing its architecture, the limitations of cloud‑centric inference, the advantages of localized inference, and the challenges and solutions for model and feature localization, SDK design, and future AutoML enhancements.

AI PlatformFlinkdistributed-systems
0 likes · 17 min read
One‑Stop AI Platform for Cloud, Edge, Mobile, Flink, and Application Intelligence: Architecture, Challenges, and Solutions
HelloTech
HelloTech
Apr 12, 2023 · Artificial Intelligence

Integrating Machine Learning Ranking into Elasticsearch: Architecture, Components, and Performance

The team embedded a full machine‑learning ranking pipeline as an Elasticsearch plug‑in—combining real‑time and offline feature stores, hot‑loadable model jars via Dragonfly, an MLeap execution engine, and a DSL for feature definition—replacing the coarse‑ranking logistic‑regression with a tree model that adds ~10 ms latency but yields a 1.2 % AB‑test lift, while maintaining high throughput, low CPU usage, and supporting future batch deep‑learning rescoring.

feature engineeringmodel deploymentonline prediction
0 likes · 16 min read
Integrating Machine Learning Ranking into Elasticsearch: Architecture, Components, and Performance
HelloTech
HelloTech
Apr 3, 2023 · Artificial Intelligence

Integrating Machine Learning with Elasticsearch for Enhanced Ranking Capabilities

At the 2023 Elastic China Developer Conference in Shenzhen, Peng Cheng of Hello Technology will demonstrate how migrating online machine‑learning predictions into Elasticsearch can exploit its distributed architecture to rank thousands of models, expand model types and computational depth, and unlock new growth opportunities for business applications, underscoring the event’s status as China’s premier Elasticsearch open‑source technology forum.

ElasticsearchRankingTechnical Conference
0 likes · 2 min read
Integrating Machine Learning with Elasticsearch for Enhanced Ranking Capabilities
HelloTech
HelloTech
Apr 3, 2023 · Mobile Development

Flutter Upgrade Journey: Null‑Safety Migration, Engine Crash Fixes, and Build Process

The team’s second‑phase Flutter upgrade details why they moved to Flutter 2.x for null‑safety and performance gains, outlines the migration steps and common fixes, describes how they resolved a FlutterEngine destroyContext crash by cherry‑picking a fix, and provides a complete guide to building the iOS engine and gen_snapshot binaries, while previewing future expansion into Flutter Web and cross‑platform front‑ends.

Build ProcessCI/CDDART
0 likes · 13 min read
Flutter Upgrade Journey: Null‑Safety Migration, Engine Crash Fixes, and Build Process
HelloTech
HelloTech
Mar 30, 2023 · Operations

Emergency Response Planning and Practice at Hello (哈啰) for Large‑Scale Promotions

Hello’s technical‑risk team created a comprehensive emergency‑response system for large‑scale promotions—prioritizing core scenarios, running high‑frequency drills, modeling fault‑portraits, defining metric‑based triggers and clear rollback actions—which delivered zero incidents during the 930 Big Sale, achieved over 80 % core‑line coverage, and now aims to automate plan selection and execution.

case studyemergency planningincident response
0 likes · 16 min read
Emergency Response Planning and Practice at Hello (哈啰) for Large‑Scale Promotions
HelloTech
HelloTech
Mar 22, 2023 · Artificial Intelligence

Smart Return System: Optimizing Bike Return Experience Using Sensor Data and Trajectory Prediction

The proposed smart return system for shared‑mobility bikes uses accelerometer data and Hidden Markov Model trajectory prediction to distinguish temporary stops from actual parking, enabling 85% of returns to be pre‑judged, improving accuracy, speed, user experience, and operational costs.

Hidden Markov ModelsLocation AccuracySmart Transportation
0 likes · 5 min read
Smart Return System: Optimizing Bike Return Experience Using Sensor Data and Trajectory Prediction
HelloTech
HelloTech
Mar 15, 2023 · Mobile Development

Cross‑Platform Mobile Development: Evaluation and Implementation of Flutter and H5 Hybrid Solutions

The team evaluated cross‑platform options, piloted both Flutter and an H5 offline‑Hybrid approach, found Flutter’s self‑rendering engine delivered superior performance and consistency, and consequently adopted Flutter as the primary framework, dramatically improving development efficiency and UI parity across Android and iOS.

Cross‑platformFlutterHybrid App
0 likes · 14 min read
Cross‑Platform Mobile Development: Evaluation and Implementation of Flutter and H5 Hybrid Solutions